Coxa Plana Pathophysiology
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Family history Abnormal birth presentation Disturbed venous drainage Intraosseous venous hypertension Increase blood viscosity Decrease blood Interruption of vascular supply to the femoral head Occlusion of retinaacular vessel Ischemia of femoral head Failure of ossific nucleus to grow Hypertrophy of articular cartilage Increase intraarticular MRI Roentgenography Iinitial phase - Widening of medial joint space Fragmentation phase - resorption of necrotic portion of the ossific nucleus Reparative phase - return to normal radiodensities of ossific bone Flattened, irregular Increasing pain Loss of function/ inactivity Decrease ROM limp
description
pathophysiology of coxa plana including lab test in diagram form
Transcript of Coxa Plana Pathophysiology
Family historyAbnormal birth presentationRacial/ ethnic factors
Disturbed venous drainage Intraosseous venous
hypertensionIncrease blood viscosity
Decrease blood flow
Interruption of vascular supply to the femoral head
Occlusion of retinaacular vessel
Ischemia of femoral head
Failure of ossific nucleus to grow
Hypertrophy of articular cartilage
Stage of necrosis
Slow resorption of the dead bone
Replacement of new, living bone
Increase intraarticular pressure
MRI
RoentgenographyIinitial phase - Widening of medial joint space
Fragmentation phase - resorption of necrotic portion of the ossific nucleus
Reparative phase - return to normal radiodensities of ossific bone
Healed
Arthrography- shows shape of cartilaginous bone of femoral head
Flattened, irregular femoral head
Increasing pain
Loss of function/ inactivity
Thigh, calf, buttock, atrophy
(+) Tredelenberg
Decrease ROM limp
